Safe-lock



(Model.) 4 Sheets-Sheet 1.

E. H. FLINT.

' SAFE LO0K.-

No. 338,505. I Patented Mar. 23, 1886.

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(Model.) 4 Sheets-Sheet 2.

E. H. FLINT.

SAFE LOCK.

No. 338,505. Patented'Mar. 23, 1886.

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(ModeL) 4 SheetsSheet 4.

E. H. FLINT.

SAFE LOOK. No. 338,505. Patented Mar. 23, 1886.

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TESZ: Edwz'zzjzCFZg'nZ UNITED STATES PATENT OFFICE.

SAFE- LOCK.

QPHCIFIC'ATION forming part of Letters Patent No. 338,505, dated March23,1886.

Application filed November 24,1884. Serial No. 148,726. (ModeL) To allwhom it may concern:

Be it known that I, EDWIN H, FLINT, of Cincinnati, Hamilton county,Ohio, have invented new and useful Improvements in Safe- Locks, of whichthe following is a specification.

My invention, as to its first and principal part, relates to animprovement in those safelocks in which protraction and retraction ofthe door bolt work is effected by a screwing motion, so that, even inevent of the destruction of the lock proper, such door bolt-work willremain securely locked against clandestine attempts to retract it. Withthis object in view the construction is further such that (except duringlegitimate operation of the door bolt-work) the lock-bolt and the doorbolt work are completely disconnected from each. other. The saidscrewing action may either consist in a spiral movement of thedoor-bolts themselves, (or parts of them,) or may be derived fromrotation of nuts thereupon, as hereinafter fully explained.

My invention further comprises new and improved means for subordinatingthe tumbler system of a safe-lock to the timer, in which a peculiarlyarranged double-headed pinion capable of being brought into gear withcogwheels on two of the tumblers operates (for the time being) tomaintain these two particular tumblers out of gate, and (while sogeared) to prevent operation of the anglebar, and to thereby preventopening of the look.

In the accompanying drawings, Figure 1 is a partly-sectioned elevationof a safe-lock embodying my invention, the door-bolts and also thelock-bolt being shown retracted. Fig. 2 is a similar elevation, in whichthese bolts are shown protracted. Fig. 3 is a perspective view showingthe device for preventing rotation of one of the door-bolt members. Fig.4 is an elevation showing the tumbler and the timer mechanisms withtheir timer-connection set. Fig. 5 is a similar elevation of the sameparts in the discharged condition of said con- IIGOlZlOll. Figs. 6 and 7are edge views of the tumbler mechanism respectively in the set anddischarged conditions of the timer. Fig. 8 is a section on the line 8 8,Fig. 2. Figs. 9, 10, 11, and 12 illustrate modifications of my doorbolt-work.

A may represent portions of the frame of a safe-lock.

B may represent portions of a safe-door, of which 1) represents the edgeto which the hinges (not here shown) are attached. The door-bolts (nowto be described) are retained in proper position by guides a a.

Each door-bolt consists, preferably, of two members, D E, one of which(say the member D) is screw-threaded interiorly, as at d, to receive theexteriorly screw-threaded portion 6 of the other member. Both of saidmembers are capable of endwise movement (protractile for locking andretractile for unlocking) within said guides. Rotation of the member, D,nearest the hinge edge of the dooris prevented by any suitablemeans-such as a projection, 11, that occupies a slot, a, in the case.The member E, on the contrary, is free to revolve (with a spiral motionabout its geometrical axis) within the guides a a. Such spiralrevolution of the member E (consequent on the described screwthreadedconnection of the members D and E and the prevention of rotation of oneof them) operates either to lengthen or shorten the compound bolt D Easa whole, according to the direction of rotation of said member E. Suchlengthening operates to thrust the outer extremities of both boltmembers into the appropriate recesses or keepers of the safe-jambs, (nothere shown,) from which recesses again reverse rotation of the saidmember E operates to free them. Such rotation is made possible (afterrelease of the lock-bolt from the dogging mechanism of the lock proper)by the means following: Each memberE has a long pinion, G,which pinionsgear in idlers H H, both of which gear to a wheel, I, whose beveledportion J (when the safe-bolt reaches its protracted position) comesinto mesh with a bevel-wheel, K,whose shaft L terminates outside thesafe-door in a handle, M. The wheels H H and I are all jou rnaled tohead N of the lock-bolt 0, whose protractile and retractile movementsmay be accomplished by means of the usual angle-bar, P, which (when thegates q of the entire group of tumblers Q are brought into alignment)becomes liberated for customary use in protracting the lock-bolt. Suchprotraction brings the beveled portion J of the wheel I into gear withits drive or time mechanisms are as follows:

master wheel K, whose rotation to or fro operates to screw the saiddoor-bolt members out or in, in the manner already explained. Shoulderse on the said bolt members serve to limit their play within their guidesto a.

The tumbler mechanism (except as to the hereinaftendescribed deviceswhich connect it with the timer) may have the usual or any suitable formand requires no specific description.

a represents the usual fixed stud about which the group Q of tumblersrevolve.

R represents the driving-tumbler, whose attached spur-wheel T gears toand derives motion from the customary master-wheel T upon the operatingarbor U, which arbor communieates outside the lock with the usual dial,S, and operating-handle T.

The devices which connect the tumbler and The outermost tumbler, Q ofthe group has a spurwheel, T. XV WV is a double-headed pinion, which ispivoted at one end to the loek-case, (where its member \V gearspermanently with the spur-wheel T,) and at its other end to a latch, X,that is connected by pivot 00 to the case. Attached to the latch X is aspringbridle, Y, whose engagement at its notch y upon the trigger Z ofthe timer operates to hold the member W of the double-headed thatcondition until disengagement of the said member (by release of thetimer attachment) permits the combination to be operated.

This release is brought about by impact of one or other of the customarytappets, 1 2, of the timer.

The above-described preferred form of my safe bolt-work is susceptibleof various modifications; for example, my said work may take the formrepresented in Fig. 9, in which the screw-threads d and e of my two boltmembers D and. E are both external and respectively of right and leftspirality, and are tapped within correspondingly right and left threadsa a" within the guide a. (Jo-rotation and simultaneous protraction andretraction of the said bolt members are secured by means of anon-circular tongue, 6, upon one bolt member fitting within acorresponding socket, 61, within the other bolt member.

Another possible form of my safe bolt-work is shown in Fig. 10, whereinpinions G are: separate pieces from the bolt members E and revolve inbearings F upon the case, and have interior right and leftscrew-threadsg g, for the correspondingly screw-threaded shanks d and eof the door-bolt members. In this form the spiral motion is confined tothe safebolt adjunct G, and the motion of both bolt members is simplyrectilinear, their rotation being prevented by any suitable mechanicalexpedientsuch as pins 3,0ccupying channels 4 in such members.

For doors of large safes the safe-bolt motion of either of the formsabove described may be communicated to distant bolts E by means of anycustomary or suitable transmitting mechanismsuch, for example, as shownin Fig. 11,

in which bolts E, operated as described in Fig.

10, are (by means of customary carrying-bars 5) connected rigidly tosuch distant bolts E, which in turn may (by customary rods,6, anglebars7, and lovers 8) themselves operate on such distant bolts, as shown at Eand D.

Still another mode of transmitting motion from such safe bolt-work to"distant safe-bolts is shown in Fig. 12, in which sprockets 10 (upon abevel-wheel, J, journaled to the lockbolt head) communicate (by chains11) with pinions G (similar to those represented in Fig. 10) upon thedistant bolts E of said Fig. 12. From this form the wheels H and thecylindrical portion of the wheel I are omitted as unnecessary.

The forms shown in Figs. 9, 10, 11, and 12 may obviously be applied tosafes which have door bolt-work only on the free edge of the door.

If desired, all or any number of the doorbolts of a safe having manybolts may be adapted to operate by a screwing motion in one or other ofthe forms above described.

I claim as new and of my invention- 1. In a safe-lock, the combination,with the lock-frame, of a two-part door-bolt having screw-threadedconnection between said parts, a pinion secured to one member of saidbolt, the knob or handle outside the safe-door, and geared connectionbetween said handle and pinion, substantially as and for the purpose setforth.

2. In a safe-lock, the combination, with the lock-frame, of a two-partdoor-bolt having screw-threaded connection between said parts, a stopfor preventing the rotation of one seetion,and a pinion secured to theother section of said bolt, the knob or handle outside the safe-door,and the geared connection between said knob and pinion.

3. In a safe-lock, the combination, with the lock-frame A, having theguides at a, of the two-part lock-bolt D E, having screw-threadedconnections d e and the shoulders e, the stop for preventing therotation of the section D, the pinion G on the section E, the handle M,

and the geared connection between said hanand gear-wheels carried by thelock-bolt for connecting said pinion with said elongated pinion,substantially as set forth.

5. The combination, with a serew-actuated door-bolt and its operatingknob or handle having a shaft extending through the door and amaster-Wheel secured thereto, of the lockbolt and the gear-Wheelscarried by said lockbolt, for connecting said master-Wheel and bolt whensaid lock-bolt is protracted, as set forth.

6. The combination, with the lock -frame and a pair of screw-actuateddoor bolts having pinions G G, and the operating knob or handle M,having shaft L and master-Wheel K, of the lock-bolt 0, having thecross-head N and the gear-wheels carried by said crosshead, forconnecting the pinions G G and master-Wheel K when the lock-bolt O isprotracted, substantially as set forth.

7. In a permutation-lock, the combination, with the tumblers havingspurs or teeth and a pinion gearing therewith,for compelling theirsynchronous rotation, of the time mechanism and connecting mechanismbetween said time mechanism and pinion, for moving the latter in and outof engagement with said spurs or teeth, for the purpose set forth.

8.. The combination, with the tumblers Q and R, having the spur-Wheels Tand T, respectively, of the double-headed pinion WV WV, gearing withsaid spur-wheels,the latch X, in which one end of the shaft of saiddoubleheaded pinion is journaled, and the time mechanism for controllingtheposition of said latch, substantially as set forth.

9. The combination, with the tumblers Q and It, having spur-wheels T andT, respect: ively, of the double-headed pinion W W, the latch X, thespring-bridle Y 1 the trigger Z, and the time mechanism, substantiallyas and for the purposes set forth.

In testimony of which invention I hereunto set my hand.

EDIVIN H. FLINT.

Attest:

Gno. H. KNIGHT, Guns. E. PRIOR.

